I checked my grounds and cleaned them all. There is one behind each headlight that comes off the headlight harness. Plus, there are two behind the battery. I cleaned them too. No change on the issue.
did some more checking and testing.
I will check. ThxOnly could find T bird schematic but the colors and wiring are roughly the same
T birds had other stuff on them like cornering lamps and lamp out warning
the below schematics show the same brown wire out to the lamps and the 2 powers in are also the same